Mariah Carey and comedian Nick Cannon are headed for a split and “living separately” after she hired security to keep him away from other women, sources exclusively told Page Six.

Our sources tell us Carey and Cannon, the host of “America’s Got Talent,” are separating after six years of marriage. “He hasn’t been staying at their home,” one music insider tells Page Six. “He’s been living out of hotels. They’re fighting a lot.”

Another source told us Carey has suspected Cannon of cheating. And when the comic hosted pool parties in Las Vegas earlier this year, the diva dispatched a security guard to keep watch over her husband.

“The security guard wasn’t there to keep the girls away from him,” said our source. “It was to keep him away from the girls.”

Carey also didn’t want Cannon drinking while at the Vegas gigs because she felt he “gets in trouble when he drinks,” the source added.